CAIE A Level Biology 9700 · Classification, biodiversity and conservation
A biologist studying two populations of small mammals, X and Y, observes that they are very similar in appearance but differ in diet and mating calls. They do not interbreed in the wild. Compare the biological, morphological, and ecological species concepts, using this scenario to illustrate your answer.
4 marks, so the mark scheme is looking for about 4 separate creditworthy points. Making the same point twice in different words earns it once.
Compare means: Give similarities or differences between two things, and say which side each point belongs to. Write each point as a pair, for example: A is X, whereas B is Y. Two separate descriptions rarely earn the marks.
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.